16_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Garden Hygiene and Safety There is no room for

There is no room for poor performance anywhere

With an N-P-K of 2-0-2

Ratio: 1:500 to 1:50

Commercial Field Crops – Use as part of a seasonal IPM rotation to manage slug populations across multiple generations throughout the growing season

Flange: Built in 8"

16_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Garden Hygiene and Safety There is no room forNordic Pure Custom MERV 8 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition